University of Oulu

A. Irawan and T. Matsumoto, "Feedback-Assisted Correlated Packet Transmission With a Helper," in IEEE Transactions on Vehicular Technology, vol. 67, no. 5, pp. 4303-4315, May 2018,

Feedback-assisted correlated packet transmission with a helper

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Author: Irawan, Ade1,2; Matsumoto, Tad3,4
Organizations: 1Department of Computer Science, Universitas Pertamina, Indonesia
2Japan Advanced Institute of Science and Technology (JAIST), Japan
3School of Information Science, JAIST, Japan
4Center for Wireless Communication, University of Oulu, FI- 90014 Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 2.2 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2018
Publish Date: 2020-04-24


In this paper, we analyze the impact of source correlation on the diversity and coding gains of a retransmission system, where we aim to recover M erroneously received packets only by transmitting one helper packet utilizing the source correlation among the packets. This system is referred to as M-in-1 helper transmission. The helper packet is constructed simply by taking binary exclusive-OR of the M erroneously received information packets, notified via the feedback channel. To identify the tradeoff between source correlation and performance gain due to coding and diversity, we start our investigation with in-depth analyses on rate regions and outage probabilities with M = {2, 3}. We also evaluate the influence of unequal power and/or redundancy allocations between the helper and information packets. Finally, we provide the analytical results on achievable diversity order with arbitrary integer values of M. It is shown that M-in-1 helper transmission can always achieve Mth-order diversity. Furthermore, (M + 1)th-order diversity can be achieved with M being odd when the source correlation is very high; however, it cannot be achieved with M being even.

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Series: IEEE transactions on vehicular technology
ISSN: 0018-9545
ISSN-E: 1939-9359
ISSN-L: 0018-9545
Volume: 67
Issue: 5
Pages: 4303 - 4315
DOI: 10.1109/TVT.2018.2795242
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work has been also performed in part under JSPS Kakenhi (B)15H04007, and Academy of Finland NETCOBRA project.
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